Coal-fired boiler-furnace.



l GEORGE WILKINSON, F HARROG-ATE, ENGLAND.

COAL-FIRED BOILER-FURNACE.

Appligation led May 14, 1917. Serial No. 168,456.

To all whom it may c'oaoern Be it known that I, GEORGE WILKINSON, a

' subject of the King of Great Britain, residing at Harrogate, in the county of York, England, have invented Certain new and useful 4Improvements in Coal-Fired Boiler- Furnaces, of which the following is a 'specification.

This invention relates to boilers provided with 'coke burning grates; and it consists in-combining with the boiler and its furnace, a retort for distilling coal, and arrangin the retort as hereinafter fully describe and claimed so thatthe residual coke from the retort will be automatically fed onto the boiler grate, and so that the retort will also be heated by the products of combustion formed by the coke burned on the grate.

In the drawings, Figure l is a vertical section through a retort, a boiler and a boiler furnace constructed according to this invention. Fig. 2 is a plan view of the same,

partially in section on the line 1 1 in Fig. 1.

The setting 30 of the boiler is provided with an incllned fire grate 49. The boiler inclosed in this setting consists of two series or banks of vertical water tubes 52, the upper ends of which are connected to a steam receiver 31. The lower ends of each series Aof tubes are connected to a mud drum 56,

and the water tubes are arranged in heating chambers 33 which communicate with the main heating chamber or furnace Chamber 55 above the grate. A heating ue 50 is side of the grate and the furnace chamber, and above the upper end portion of the grate.

This flue or'heating chamber 50 communicates with the furnace chamber by a duct or Specification of Letters Patent.

Patented Mar, 4, 1919.

cross-passage 5l. A retort 48 for distilling coal is arranged in the heating flue, and its lower end is arranged so that the residual coke is discharged automatically onto the upper part of the grate 49. The coke burns on the said grate and heats the water in the water tubes of the boiler, and portions of the products of combustion pass through the duct 51 into the flue 5 0 and heat the retort 48. The boiler may be variously constructed in carrying out this invention, and has all the necessary fittings of any approved construction.

What I claim is:

l. The combination, with a boiler furnace provided with a grate and a heating chamber for the boiler, said furnace having also a vertical heating flue arranged to one side of the grate and a lateral passage consetting provided with separate heating' chambers or finesv for the said boiler and retort and having a lateral passage between the said hea-ting chambers or lues, and a grate operating to heat both heatingI cham-- bers, the said retort being arranged todischarge coke automatically onto the said grate.

In testimony whereof I aiiix my signature lin the presence of two witnesses. formed in the setting and is arranged at one l GEORGE WILKINSON.

Witnesses:

FRED. J. RATCLIFFE, JAMES A. I-IINCHLEY. 

